Belmont, Brothers, Canning Eastern Districts, Midland and Armadale basically make up Central Districts.
Armadale merged with Eastern Districts to make up Central Districts at the start of 2007. The agreement was for the side to play in the Bulldogs jerseys at home games and in the Rabbitohs jerseys at away games. That didn't eventuate. That's in the constitution of Central Districts.
As for old teams, I could only think of
Applecross Jets [Blue and Gold]
Armadale Rabbitohs/Warriors [Red and Green]
Belmont Steelers [Black and Sliver]
Brothers [Black and Green]
Canning Bulldogs [Blue and White]
Central Districts [Blue and White, Red and Green]*
Eastern Bulldogsz [Blue and White]Fremantle Roosters [Red, White and Blue]*
Joondalup Giants [Maroon, Yellow and White]*
Kalgoorlie Brothers [Black and Silver]*
Mandurah Monarchs [Blue, White and Yellow]
Marrangaroo Bulls [Blue and Red]
Mosman Park Cottesloe Tigers? [Black and Orange]
North Beach Sea Eagles [Maroon and White]*
Rockingham Raiders/Sharks [Green, White, Blue and Yellow]*
Sorrento ?? [Green and White]
South Perth Lions [Red and White]*
Willagee Bears [Black and Red]*
*Current WARL clubs
I also predicted that South Perth would win the comp back in March this year [going out on a limb hey? haha]
Winner: South Perth
Improvers: Joondalup & Willagee
Sliders: North Beach & Central